Joule-Thomson expansion of charged dilatonic black holes

Abstract Based on the Einstein-Maxwell theory, Joule-Thomson (J-T) expansion of charged dilatonic black holes(the solutions are neither flat nor AdS) for (n + 1)-dimensional spacetime is studied. To this end, we analyze effects dimensions n and dilaton field ? J-T expansion. The explicit expression coefficient derived, as a result, negative heat capacity leads to cooling process. In contrast effect dimension, inversion curve decreases with charge Q at low pressure while an opposite result obtained high pressure. We can see that increase dimension or parameter ?, both cut-off point minimum temperature Tmin change. Moreover, concerning ratio Tmin/Tc, it numerically find independent charge, whereas depends dimension. As = 3 0, 1/2. It found enhances ratio. addition, identify cooling-heating regions by investigating isenthalpic curves, behavior mass Mmin shows transition may not happen under some special conditions.